... die steel Using methods and propertiesUsage: 1.2379 is a high-carbon high-chromium alloy tool steel, heat treatment has a high ... hardened layer of a certain organization.Chemical compositionChemical composition: Carbon C: 1.55 Si Si: 0.35 Manganese Mn: 0.4 ... 1.2738, 1.2311,1.0503,1.0540,1.0535,1.1525,1.1545,1.2735,1.2764,1.4021,1.2361, 1.2316,1.4122,1.2327,1.2550,1.2782,1.2787 1.2379/1.2419/1.2108 TOOL ...